Math Lesson

Math 7 Quarter 1 Review (7.1-7.2)​

by Julie White​

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Multiple Choice

Fill in the blank with the correct sign:  <, > or =.
4 ____ -2

• <
• >
• =

Multiple Choice

Which of these is represented by a negative number?

• an elevation above sea level
• a temperature below zero
• a positive electrical charge

Multiple Choice

What is the absolute value of 13?

• -13 doesn't have an absolute value.
• 13
• -13

Multiple Choice

Which number is the smallest?
-7, 2, -9, 0, 3, -8

• -7
• -8
• -9
• 0

Multiple Choice

What is the opposite of 9?

• 9 doesn't have an opposite.
• 9
• -9

Multiple Choice

Fill in the blank with correct sign: <, >, or =.
|7| ____ 7

• <
• >
• =

Multiple Choice

List in order from least to greatest.
5/4, 56%, 1.07, 4/5

• ^{5/4, 56%, 1.07, 4/5}
• ^{1.07, 4/5, 5/4, 56%}
• ^{56%, 1.07, 4/5, 5/4}
• ^{56%, 4/5, 1.07, 5/4}

Multiple Choice

7.82 x 10^-6 is an example of scientific notation. The exponent of -6 tells you your number will be very ________.

• Large
• Small
• Basic

Multiple Choice

Change from standard form to scientific notation: 12,000,000

• 12.0  x  10⁷
• 0.12  x  10⁷
• 1.2  x  10⁶
• 1.2  x  10⁷

Multiple Choice

Change from standard form to scientific notation:  0.000398

• 39.8  x  10^-5
• 3.98  x  10^-5
• 3.98  x  10^-4
• 39.8  x  10^-6

Multiple Choice

Try to change the number back to standard form:  6.79  x  10⁴

• 679,000
• 6,790
• 67,900
• 6,790,000

Multiple Choice

Try to change the number back to standard form: 3.97  x  10^-2

• 0.000397
• 0.0397
• 0.0000397
• 0.397

Multiple Choice

To compare two numbers that are in scientific notation, first compare the ________ . If they are the same, then compare the ___________.

• decimals; exponents

• first number; next number

• exponents; decimals

Multiple Choice

Which of these numbers is the smallest?

• 3.5 x10⁷

• 3 x10⁷

• 5 x10⁷

• 5.5 x10⁷

Multiple Choice

Place the following numbers in order from least to greatest:

7.8 x 10⁶, 5.1 x 10⁴, 1.25 x 10⁵, 4.09 x 10⁴

• 4.09 x 10⁴,

  1.25 x 10⁵,

  5.1 x 10⁴,

  7.8 x 10⁶

• 4.09 x 10⁴,

  5.1 x 10⁴,

  1.25 x 10⁵,

  7.8 x 10⁶,

• 1.25 x 10⁵,

  4.09 x 10⁴,

  5.1 x 10⁴,

  7.8 x 10⁶,

Multiple Choice

The diameter of the planet Mercury is

4.87 x 10³ km. The diameter of the planet Venus is 1.21x10⁴ km. The diameter of the planet Mars is 1.28 x 10³ km.

Which planet has the smallest diameter?

• Mercury

• Mars

• Venus

Multiple Choice

Square roots are the opposite of ____________.

• Cube Roots
• Squaring
• Multiplication
• Absolute Value

Multiple Choice

What is the area of a 3 cm square?

• $$6cm^2$$

• $$9cm^2$$

Multiple Choice

If I know the area of a square, how do I find the side length?

• I square the area.
• I divide the area by 2.
• I take the square root of the area.
• I divide the area by 4.

Multiple Choice

13²

• 26
• 196
• 144
• 169

Multiple Choice

A perfect square is when a whole number is multiplied by itself?

• FALSE
• TRUE

Multiple Choice

All the following are Perfect Squares except for which one?

• 81
• 121
• 361
• 198

Multiple Choice

• √81 = 9
• 9 ÷ 9 = 1
• 9 × 2 = 18
• √9 = 3

Multiple Choice

√ 64

• 4
• 6
• 9
• 8

Multiple Select

Which of the following are perfect squares?

• 25

• 81

• 10

• 1

• 50

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Multiple Choice

Marcel bought two candy bars for 79¢ each, three sodas for $1.29 each, and one bag of chips for $2.39. If he pays with a $20 bill, how much change does he receive?

• $7.84

• $12.16

• $15.53

• $4.47

Multiple Choice

The news reported that 40% of customers lost their electricity during the last storm. If there are 2,600 customers, how many of them lost their electricity?

• 1,040

• 2,560

• 6,500

• 1,560

Multiple Choice

In the time allowed, Joshua answered only 2/5 of his 25 question test. How many questions did Joshua not answer?

• 10

• 40

• 15

• 5

Multiple Choice

The average all-time January temperature in a North Dakota town is -3°F. The average temperature in January 2018 was 19 degrees colder than the all-time average. What was the temperature in January 2018?

• 22°F

• 16°F

• -22°F

• -16°F